All files / src/common/api readingQueueApi.ts

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import { ReadingQueueItem, Tag } from '../types';
import { logger } from '../utils/logger';
import {
  handleSupabaseError,
  requireAuth,
  supabase,
  withPerformanceLogging,
} from './supabaseClient';
 
// Initialize logger
const log = logger;
 
// Transform raw Supabase response to ReadingQueueItem
const transformQueueItem = (data: {
  id: string;
  user_id: string;
  newsletter_id: string;
  position: number;
  added_at: string;
  newsletters: {
    id: string;
    title: string;
    summary: string;
    content: string;
    image_url: string;
    received_at: string;
    updated_at: string;
    newsletter_source_id: string;
    user_id: string;
    is_read: boolean;
    is_archived: boolean;
    is_liked: boolean;
    word_count: number;
    estimated_read_time: number;
    newsletter_sources?: any;
    tags?: any[];
  };
}): ReadingQueueItem => {
  if (!data.newsletters) {
    const errorMsg = `Newsletter with id ${data.newsletter_id} not found in reading queue item ${data.id}. The newsletter may have been deleted.`;
    log.error(
      'Newsletter not found in reading queue item',
      {
        component: 'ReadingQueueApi',
        action: 'transform_queue_item',
        metadata: {
          queueItemId: data.id,
          newsletterId: data.newsletter_id,
          userId: data.user_id,
          position: data.position,
          addedAt: data.added_at,
        },
      },
      new Error(errorMsg)
    );
    throw new Error(errorMsg);
  }
 
  return {
    id: data.id,
    user_id: data.user_id,
    newsletter_id: data.newsletter_id,
    position: data.position,
    added_at: data.added_at,
    priority: data.priority,
    notes: data.notes,
    newsletter: {
      id: data.newsletters.id,
      title: data.newsletters.title,
      summary: data.newsletters.summary,
      content: data.newsletters.content,
      image_url: data.newsletters.image_url,
      received_at: data.newsletters.received_at,
      updated_at: data.newsletters.updated_at,
      newsletter_source_id: data.newsletters.newsletter_source_id,
      user_id: data.newsletters.user_id,
      is_read: Boolean(data.newsletters.is_read),
      is_archived: Boolean(data.newsletters.is_archived),
      is_liked: Boolean(data.newsletters.is_liked),
      word_count: data.newsletters.word_count,
      estimated_read_time: data.newsletters.estimated_read_time,
      source: data.newsletters.newsletter_sources || null,
      tags: data.newsletters.tags || [],
    },
  };
};
 
// Reading Queue API Service
export const readingQueueApi = {
  // Get all reading queue items for the current user
  async getAll(limit?: number): Promise<ReadingQueueItem[]> {
    return withPerformanceLogging('readingQueue.getAll', async () => {
      const user = await requireAuth();
 
      let query = supabase
        .from('reading_queue')
        .select(
          `
          *,
          newsletters (
            *,
            newsletter_sources (
              *
            )
          )
        `
        )
        .eq('user_id', user.id)
        .order('position', { ascending: true });
 
      if (limit) {
        query = query.limit(limit);
      }
 
      const { data: queueItems, error: queueError } = await query;
 
      if (queueError) handleSupabaseError(queueError);
      if (!queueItems?.length) return [];
 
      // Filter out queue items with null newsletters first
      const invalidItems = queueItems.filter((item) => !item.newsletters);
      const validQueueItems = queueItems.filter((item) => item.newsletters);
 
      // Log data integrity issues and clean up orphaned items
      if (invalidItems.length > 0) {
        log.warn(`Found ${invalidItems.length} queue items with null newsletters, cleaning up`, {
          component: 'ReadingQueueApi',
          action: 'cleanup_invalid_items',
          metadata: {
            invalidItemsCount: invalidItems.length,
            invalidItems: invalidItems.map((item) => ({
              id: item.id,
              newsletter_id: item.newsletter_id,
              user_id: item.user_id,
              position: item.position,
            })),
          },
        });
 
        // Automatically clean up orphaned items
        try {
          const orphanedIds = invalidItems.map((item) => item.id);
          const { error: cleanupError } = await supabase
            .from('reading_queue')
            .delete()
            .in('id', orphanedIds)
            .eq('user_id', user.id);
 
          if (cleanupError) {
            log.error(
              'Failed to cleanup orphaned items',
              {
                component: 'ReadingQueueApi',
                action: 'cleanup_orphaned_items',
                metadata: { orphanedIds },
              },
              cleanupError
            );
          } else {
            log.info(`Successfully cleaned up ${orphanedIds.length} orphaned items`, {
              component: 'ReadingQueueApi',
              action: 'cleanup_orphaned_items_success',
              metadata: { cleanedCount: orphanedIds.length },
            });
          }
        } catch (cleanupError) {
          log.error(
            'Cleanup error occurred',
            {
              component: 'ReadingQueueApi',
              action: 'cleanup_error',
            },
            cleanupError instanceof Error ? cleanupError : new Error(String(cleanupError))
          );
        }
      }
 
      if (!validQueueItems.length) {
        if (queueItems.length > 0) {
          log.warn(`All ${queueItems.length} queue items had null newsletters`, {
            component: 'ReadingQueueApi',
            action: 'all_items_invalid',
            metadata: {
              userId: user.id,
              queueItemsCount: queueItems.length,
            },
          });
        }
        return [];
      }
 
      // Fetch tags for all newsletters in the queue
      const newsletterIds = validQueueItems
        .map((item) => item.newsletter_id)
        .filter((id) => id != null); // Filter out null/undefined newsletter_ids
 
      let newsletterTags: Array<{ newsletter_id: string; tags: any }> = [];
      if (newsletterIds.length > 0) {
        const { data } = await supabase
          .from('newsletter_tags')
          .select('newsletter_id, tags(*)')
          .in('newsletter_id', newsletterIds);
        newsletterTags = data || [];
      }
 
      // Create a map of newsletter ID to tags
      const tagsMap = new Map<string, Tag[]>();
      newsletterTags.forEach((nt: { newsletter_id: string; tags: any }) => {
        if (!tagsMap.has(nt.newsletter_id)) {
          tagsMap.set(nt.newsletter_id, []);
        }
        // Handle both single tag object and array of tags
        const tags = Array.isArray(nt.tags) ? nt.tags : [nt.tags];
        tags.forEach((tag: any) => {
          if (tag && typeof tag === 'object') {
            const transformedTag: Tag = {
              id: tag.id as string,
              name: tag.name as string,
              color: tag.color as string,
              user_id: tag.user_id as string,
              created_at: tag.created_at as string,
              newsletter_count: tag.newsletter_count,
            };
            tagsMap.get(nt.newsletter_id)!.push(transformedTag);
          }
        });
      });
 
      return validQueueItems.map((item) => {
        try {
          const transformedItem = transformQueueItem(item);
          // Add tags to the newsletter
          transformedItem.newsletter.tags = tagsMap.get(item.newsletter_id) || [];
          return transformedItem;
        } catch (error) {
          log.error(
            `Failed to transform queue item ${item.id}`,
            {
              component: 'ReadingQueueApi',
              action: 'transform_queue_item_error',
              metadata: { queueItemId: item.id },
            },
            error instanceof Error ? error : new Error(String(error))
          );
          throw error;
        }
      });
    });
  },
 
  // Add a newsletter to the reading queue
  async add(newsletterId: string): Promise<ReadingQueueItem> {
    return withPerformanceLogging('readingQueue.add', async () => {
      const user = await requireAuth();
 
      // Validate newsletter ID
      if (!newsletterId) {
        throw new Error('Newsletter ID is required');
      }
 
      // Check if already in queue
      const { data: existingItem } = await supabase
        .from('reading_queue')
        .select('id')
        .eq('user_id', user.id)
        .eq('newsletter_id', newsletterId)
        .maybeSingle();
 
      if (existingItem) {
        throw new Error('Newsletter is already in reading queue');
      }
 
      // Get the current max position
      const { data: maxPosition } = await supabase
        .from('reading_queue')
        .select('position')
        .eq('user_id', user.id)
        .order('position', { ascending: false })
        .limit(1)
        .maybeSingle();
 
      const newPosition = (maxPosition?.position || 0) + 1;
 
      const { data: insertedData, error } = await supabase
        .from('reading_queue')
        .insert({
          user_id: user.id,
          newsletter_id: newsletterId,
          position: newPosition,
        })
        .select(
          `
          *,
          newsletters (
            *,
            newsletter_sources (
              *
            )
          )
        `
        )
        .single();
 
      if (error) handleSupabaseError(error);
 
      // Fetch tags for the newsletter (only if newsletter ID is valid)
      let newsletterTags: Array<{ tags: any }> = [];
      if (newsletterId) {
        const { data } = await supabase
          .from('newsletter_tags')
          .select('tags(*)')
          .eq('newsletter_id', newsletterId);
        newsletterTags = data || [];
      }
 
      const transformedItem = transformQueueItem(insertedData);
      transformedItem.newsletter.tags =
        newsletterTags
          ?.map((nt: { tags: any }) => {
            if (nt.tags && typeof nt.tags === 'object') {
              return {
                id: nt.tags.id as string,
                name: nt.tags.name as string,
                color: nt.tags.color as string,
                user_id: nt.tags.user_id as string,
                created_at: nt.tags.created_at as string,
                newsletter_count: nt.tags.newsletter_count,
              } as Tag;
            }
            return null;
          })
          .filter((tag): tag is Tag => tag !== null) || [];
 
      return transformedItem;
    });
  },
 
  // Remove an item from the reading queue
  async remove(queueItemId: string): Promise<boolean> {
    return withPerformanceLogging('readingQueue.remove', async () => {
      const user = await requireAuth();
 
      const { error } = await supabase
        .from('reading_queue')
        .delete()
        .eq('id', queueItemId)
        .eq('user_id', user.id);
 
      if (error) handleSupabaseError(error);
 
      return true;
    });
  },
 
  // Reorder reading queue items
  async reorder(updates: { id: string; position: number }[]): Promise<boolean> {
    return withPerformanceLogging('readingQueue.reorder', async () => {
      const user = await requireAuth();
 
      // Update the positions
      const { error } = await supabase.from('reading_queue').upsert(
        updates.map(({ id, position }) => ({
          id,
          position,
          user_id: user.id,
        })),
        { onConflict: 'id' }
      );
 
      if (error) handleSupabaseError(error);
 
      return true;
    });
  },
 
  // Clear all items from reading queue
  async clear(): Promise<boolean> {
    return withPerformanceLogging('readingQueue.clear', async () => {
      const user = await requireAuth();
 
      const { error } = await supabase.from('reading_queue').delete().eq('user_id', user.id);
 
      if (error) handleSupabaseError(error);
 
      return true;
    });
  },
 
  // Get reading queue item by ID
  async getById(id: string): Promise<ReadingQueueItem | null> {
    return withPerformanceLogging('readingQueue.getById', async () => {
      const user = await requireAuth();
 
      const { data, error } = await supabase
        .from('reading_queue')
        .select(
          `
          *,
          newsletters (
            *,
            newsletter_sources (
              *
            )
          )
        `
        )
        .eq('id', id)
        .eq('user_id', user.id)
        .single();
 
      if (error) {
        if (error.code === 'PGRST116') {
          return null; // Not found
        }
        handleSupabaseError(error);
      }
 
      if (!data) return null;
 
      // Fetch tags for the newsletter (only if newsletter ID is valid)
      let newsletterTags: Array<{ tags: any }> = [];
      if (data.newsletter_id) {
        const { data: tagsData } = await supabase
          .from('newsletter_tags')
          .select('tags(*)')
          .eq('newsletter_id', data.newsletter_id);
        newsletterTags = tagsData || [];
      }
 
      const transformedItem = transformQueueItem(data);
      transformedItem.newsletter.tags =
        newsletterTags
          ?.map((nt: { tags: any }) => {
            if (nt.tags && typeof nt.tags === 'object') {
              return {
                id: nt.tags.id as string,
                name: nt.tags.name as string,
                color: nt.tags.color as string,
                user_id: nt.tags.user_id as string,
                created_at: nt.tags.created_at as string,
                newsletter_count: nt.tags.newsletter_count,
              } as Tag;
            }
            return null;
          })
          .filter((tag): tag is Tag => tag !== null) || [];
 
      return transformedItem;
    });
  },
 
  // Check if a newsletter is in the reading queue
  async isInQueue(newsletterId: string): Promise<boolean> {
    return withPerformanceLogging('readingQueue.isInQueue', async () => {
      const user = await requireAuth();
 
      const { data, error } = await supabase
        .from('reading_queue')
        .select('id')
        .eq('user_id', user.id)
        .eq('newsletter_id', newsletterId)
        .maybeSingle();
 
      if (error) handleSupabaseError(error);
 
      return !!data;
    });
  },
 
  // Get reading queue statistics
  async getStats(): Promise<{
    total: number;
    unread: number;
    read: number;
  }> {
    return withPerformanceLogging('readingQueue.getStats', async () => {
      const items = await this.getAll();
 
      const stats = {
        total: items.length,
        unread: items.filter((item) => !item.newsletter.is_read).length,
        read: items.filter((item) => item.newsletter.is_read).length,
      };
 
      return stats;
    });
  },
 
  // Move item to specific position
  async moveToPosition(queueItemId: string, newPosition: number): Promise<boolean> {
    return withPerformanceLogging('readingQueue.moveToPosition', async () => {
      // Get all queue items to calculate new positions
      const items = await this.getAll();
      const itemToMove = items.find((item) => item.id === queueItemId);
 
      if (!itemToMove) {
        throw new Error('Queue item not found');
      }
 
      // Calculate new positions for all items
      const updates: { id: string; position: number }[] = [];
      let currentPosition = 1;
 
      for (const item of items) {
        if (item.id === queueItemId) {
          continue; // Skip the item we're moving
        }
 
        if (currentPosition === newPosition) {
          // Insert the moved item here
          updates.push({ id: queueItemId, position: newPosition });
          currentPosition++;
        }
 
        updates.push({ id: item.id, position: currentPosition });
        currentPosition++;
      }
 
      // If newPosition is at the end
      if (newPosition >= items.length) {
        updates.push({ id: queueItemId, position: items.length });
      }
 
      return this.reorder(updates);
    });
  },
 
  // Clean up orphaned reading queue items (where newsletters have been deleted)
  async cleanupOrphanedItems(): Promise<{ removedCount: number }> {
    return withPerformanceLogging('readingQueue.cleanupOrphanedItems', async () => {
      const user = await requireAuth();
 
      // Find queue items with null newsletters by doing a LEFT JOIN
      const { data: orphanedItems, error } = await supabase
        .from('reading_queue')
        .select(
          `
          id,
          newsletter_id,
          newsletters!left(id)
        `
        )
        .eq('user_id', user.id)
        .is('newsletters.id', null);
 
      if (error) handleSupabaseError(error);
 
      if (!orphanedItems || orphanedItems.length === 0) {
        return { removedCount: 0 };
      }
 
      log.warn(`Found ${orphanedItems.length} orphaned queue items, cleaning up`, {
        component: 'ReadingQueueApi',
        action: 'cleanup_orphaned_items_detected',
        metadata: {
          orphanedItemsCount: orphanedItems.length,
          orphanedItems: orphanedItems.map((item) => ({
            id: item.id,
            newsletter_id: item.newsletter_id,
          })),
        },
      });
 
      // Remove orphaned items
      const orphanedIds = orphanedItems.map((item) => item.id);
      const { error: deleteError } = await supabase
        .from('reading_queue')
        .delete()
        .in('id', orphanedIds)
        .eq('user_id', user.id);
 
      if (deleteError) handleSupabaseError(deleteError);
 
      return { removedCount: orphanedItems.length };
    });
  },
 
  // Create a new reading queue item
  async create(params: { newsletter_id: string; priority?: string; notes?: string }) {
    return withPerformanceLogging('readingQueue.create', async () => {
      const user = await requireAuth();
 
      if (!params.newsletter_id) {
        throw new Error('Newsletter ID is required');
      }
 
      // Check if already in queue
      const { data: existingItem } = await supabase
        .from('reading_queue')
        .select('id')
        .eq('user_id', user.id)
        .eq('newsletter_id', params.newsletter_id)
        .maybeSingle();
 
      if (existingItem) {
        throw new Error('Newsletter is already in reading queue');
      }
 
      // Get the current max position
      const { data: maxPosition } = await supabase
        .from('reading_queue')
        .select('position')
        .eq('user_id', user.id)
        .order('position', { ascending: false })
        .limit(1)
        .maybeSingle();
 
      const newPosition = (maxPosition?.position || 0) + 1;
 
      const { data: insertedData, error } = await supabase
        .from('reading_queue')
        .insert({
          user_id: user.id,
          newsletter_id: params.newsletter_id,
          position: newPosition,
          priority: params.priority || 'normal',
          notes: params.notes,
        })
        .select('id, newsletter_id, user_id, priority, position, notes, created_at, updated_at')
        .single();
 
      if (error) handleSupabaseError(error);
 
      return insertedData;
    });
  },
 
  // Update a reading queue item
  async update(params: { id: string; priority?: string; notes?: string }) {
    return withPerformanceLogging('readingQueue.update', async () => {
      const user = await requireAuth();
 
      const updateData: any = {};
      if (params.priority !== undefined) updateData.priority = params.priority;
      if (params.notes !== undefined) updateData.notes = params.notes;
 
      const { data, error } = await supabase
        .from('reading_queue')
        .update(updateData)
        .eq('id', params.id)
        .eq('user_id', user.id)
        .select('id, newsletter_id, user_id, priority, position, notes, created_at, updated_at')
        .single();
 
      if (error) handleSupabaseError(error);
 
      return data;
    });
  },
 
  // Delete a reading queue item
  async delete(id: string): Promise<boolean> {
    return withPerformanceLogging('readingQueue.delete', async () => {
      const user = await requireAuth();
 
      const { error } = await supabase
        .from('reading_queue')
        .delete()
        .eq('id', id)
        .eq('user_id', user.id);
 
      if (error) handleSupabaseError(error);
 
      return true;
    });
  },
 
  // Bulk add newsletters to queue
  async bulkAdd(
    newsletterIds: string[]
  ): Promise<{ successCount: number; errorCount: number; errors: any[] }> {
    return withPerformanceLogging('readingQueue.bulkAdd', async () => {
      if (!newsletterIds || newsletterIds.length === 0) {
        throw new Error('Newsletter IDs array cannot be empty');
      }
 
      let successCount = 0;
      let errorCount = 0;
      const errors: any[] = [];
 
      for (const newsletterId of newsletterIds) {
        try {
          await this.add(newsletterId);
          successCount++;
        } catch (error) {
          errorCount++;
          errors.push({
            newsletterId,
            error: error instanceof Error ? error.message : String(error),
          });
        }
      }
 
      return { successCount, errorCount, errors };
    });
  },
 
  // Bulk remove items from queue
  async bulkRemove(
    ids: string[]
  ): Promise<{ successCount: number; errorCount: number; errors: any[] }> {
    return withPerformanceLogging('readingQueue.bulkRemove', async () => {
      let successCount = 0;
      let errorCount = 0;
      const errors: any[] = [];
 
      for (const id of ids) {
        try {
          await this.remove(id);
          successCount++;
        } catch (error) {
          errorCount++;
          errors.push({ id, error: error instanceof Error ? error.message : String(error) });
        }
      }
 
      return { successCount, errorCount, errors };
    });
  },
 
  // Get queue item by newsletter ID
  async getByNewsletterId(newsletterId: string): Promise<ReadingQueueItem | null> {
    return withPerformanceLogging('readingQueue.getByNewsletterId', async () => {
      const user = await requireAuth();
 
      const { data, error } = await supabase
        .from('reading_queue')
        .select('id, newsletter_id, user_id, priority, position, notes, created_at, updated_at')
        .eq('user_id', user.id)
        .eq('newsletter_id', newsletterId)
        .single();
 
      if (error) {
        if (error.code === 'PGRST116') {
          return null; // Not found
        }
        handleSupabaseError(error);
      }
 
      return data;
    });
  },
 
  // Update item position
  async updatePosition(id: string, position: number): Promise<ReadingQueueItem> {
    return withPerformanceLogging('readingQueue.updatePosition', async () => {
      if (position <= 0) {
        throw new Error('Position must be greater than 0');
      }
 
      const user = await requireAuth();
 
      const { data, error } = await supabase
        .from('reading_queue')
        .update({
          position,
          updated_at: new Date().toISOString(),
        })
        .eq('id', id)
        .eq('user_id', user.id)
        .select('id, newsletter_id, user_id, priority, position, notes, created_at, updated_at')
        .single();
 
      if (error) handleSupabaseError(error);
 
      return data;
    });
  },
 
  // Get items by priority
  async getByPriority(priority: string, limit?: number): Promise<ReadingQueueItem[]> {
    return withPerformanceLogging('readingQueue.getByPriority', async () => {
      const user = await requireAuth();
 
      let query = supabase
        .from('reading_queue')
        .select('id, newsletter_id, user_id, priority, position, notes, created_at, updated_at')
        .eq('user_id', user.id)
        .eq('priority', priority)
        .order('position', { ascending: true });
 
      if (limit) {
        query = query.limit(limit);
      }
 
      const { data, error } = await query;
 
      if (error) handleSupabaseError(error);
 
      return data || [];
    });
  },
 
  // Clean up read newsletters from queue
  async cleanupRead(): Promise<{ removedCount: number }> {
    return withPerformanceLogging('readingQueue.cleanupRead', async () => {
      const user = await requireAuth();
 
      // Find queue items where the newsletter is marked as read
      const { data: readItems, error: selectError } = await supabase
        .from('reading_queue')
        .select(
          `
        id,
        newsletters!inner(id, is_read)
      `
        )
        .eq('user_id', user.id)
        .eq('newsletters.is_read', true);
 
      if (selectError) handleSupabaseError(selectError);
 
      if (!readItems || readItems.length === 0) {
        return { removedCount: 0 };
      }
 
      const idsToRemove = readItems.map((item) => item.id);
 
      const { error: deleteError } = await supabase
        .from('reading_queue')
        .delete()
        .in('id', idsToRemove)
        .eq('user_id', user.id);
 
      if (deleteError) handleSupabaseError(deleteError);
 
      return { removedCount: readItems.length };
    });
  },
};
 
// Export individual functions for backward compatibility
export const {
  getAll: getReadingQueue,
  add: addToReadingQueue,
  remove: removeFromReadingQueue,
  reorder: reorderReadingQueue,
  clear: clearReadingQueue,
  getById: getReadingQueueItemById,
  isInQueue: isNewsletterInQueue,
  getStats: getReadingQueueStats,
  moveToPosition: moveQueueItemToPosition,
} = readingQueueApi;
 
export const cleanupOrphanedReadingQueueItems = readingQueueApi.cleanupOrphanedItems;
 
export default readingQueueApi;